msg_reply.hello_world_a = {
    keyword = {
        match = "你好"
    },
    limit = { cd = 10 },
    echo = "你好，{nick}",  --纯文本回复，不执行脚本
}
msg_reply.hello_world_b = {
    keyword = {
        search = "你好！"
    },
    limit = { cd = 10 },
    echo = {
		lua = function()	--直接在注册reply时定义函数
			return "你好，{nick}！"
		end,
	}
}